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[Bug tree-optimization/33576] segfault in extract_muldiv for cpu2006 benchmark
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 28 Sep 2007 09:39:21 -0000
- Subject: [Bug tree-optimization/33576] segfault in extract_muldiv for cpu2006 benchmark
- References: <bug-33576-14936@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from rguenth at gcc dot gnu dot org 2007-09-28 09:39 -------
Confirmed. Also happens on x86_64, -O -ftree-loop-linear. We have a freed
SSA_NAME in use:
Program received signal SIGSEGV, Segmentation fault.
0x000000000067da2a in extract_muldiv_1 (t=0x2b5d06c1af60, c=0x2b5d062ab180,
code=MULT_EXPR, wide_type=0x2b5d06282000,
strict_overflow_p=0x7fffa488a0f7 "")
at /space/rguenther/src/svn/pointer_plus/gcc/fold-const.c:6008
6008 > GET_MODE_SIZE (TYPE_MODE (type)))
(gdb) print type
$2 = (tree) 0x0
(gdb) call debug_tree (t)
<ssa_name 0x2b5d06c1af60 nothrow var <var_decl 0x2b5d06343370 j> def_stmt
<ssa_name 0x2b5d06c1a240>
version 36 in-free-list>
but linear loop transforms are known to be somewhat broken.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dberlin at gcc dot gnu dot
| |org, spop at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
GCC build triplet|powerpc64-linux |
GCC host triplet|powerpc64-linux |
GCC target triplet|powerpc64-linux |powerpc64-linux, x86_64-*-*
Last reconfirmed|0000-00-00 00:00:00 |2007-09-28 09:39:21
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33576